Anyone Know of Online Engine Dyno Software so I Can Test a Few Combos?

Those things are WAY off.......you would be better off posting what you are going to run and have us guess what it will make!:-D

I don't know about WAY off, the prediction is as good as the data you give it.

FWIW, I have never had my car on a dyno but based on knowing the weight and the 1/4 mile trap speed I can estimate that I have ~370 HP. The Camquest software predicts that I have ~390HP. My 360 is pretty close to the Mopar Performance 360/380HP crate motor which always seems to dyno at more than the advertised 380HP.

That seems pretty darn good to me.